What are some recommended resources or literature in German for learning about barcode generation with PHP?

Generating barcodes with PHP can be achieved using libraries such as TCPDF or PHP Barcode Generator. These libraries provide functions to create various types of barcodes like Code 39, QR codes, etc. By integrating these libraries into your PHP code, you can easily generate barcodes for your application.

// Example using TCPDF library to generate a Code 39 barcode
require_once('tcpdf/tcpdf.php');

$pdf = new TCPDF();
$pdf->AddPage();

$barcodeobj = new TCPDF2DBarcode('123456', 'C39');
$pdf->write2DBarcode('123456', 'C39', '', '', '', 18, 0.4, $barcodeobj, 'N');

$pdf->Output('barcode.pdf', 'I');